import static org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnersModel.ENTITY_ID_QNAME;
import static org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnersModel.ENTITY_OWNERS_PATH;
import static org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnersModel.ENTITY_QNAME;
+
import akka.actor.ActorRef;
+import com.google.common.base.Optional;
import com.google.common.base.Preconditions;
import java.util.ArrayList;
import java.util.Collection;
* @author Moiz Raja
* @author Thomas Pantelis
*/
-public class CandidateListChangeListener implements DOMDataTreeChangeListener {
+class CandidateListChangeListener implements DOMDataTreeChangeListener {
private static final Logger LOG = LoggerFactory.getLogger(CandidateListChangeListener.class);
+ private final String logId;
private final ActorRef shard;
private final Map<YangInstanceIdentifier, Collection<String>> currentCandidates = new HashMap<>();
- public CandidateListChangeListener(ActorRef shard, ShardDataTree shardDataTree) {
+ CandidateListChangeListener(ActorRef shard, String logId) {
this.shard = Preconditions.checkNotNull(shard, "shard should not be null");
+ this.logId = logId;
+ }
- shardDataTree.registerTreeChangeListener(YangInstanceIdentifier.builder(ENTITY_OWNERS_PATH).
- node(EntityType.QNAME).node(EntityType.QNAME).node(ENTITY_QNAME).node(ENTITY_QNAME).
- node(Candidate.QNAME).node(Candidate.QNAME).build(), this);
+ void init(ShardDataTree shardDataTree) {
+ shardDataTree.registerTreeChangeListener(YangInstanceIdentifier.builder(ENTITY_OWNERS_PATH)
+ .node(EntityType.QNAME).node(EntityType.QNAME).node(ENTITY_QNAME).node(ENTITY_QNAME)
+ .node(Candidate.QNAME).node(Candidate.QNAME).build(), this, Optional.absent(), noop -> { });
}
@Override
public void onDataTreeChanged(Collection<DataTreeCandidate> changes) {
- for(DataTreeCandidate change: changes) {
+ for (DataTreeCandidate change: changes) {
DataTreeCandidateNode changeRoot = change.getRootNode();
+ ModificationType type = changeRoot.getModificationType();
- LOG.debug("Candidate node changed: {}, {}", changeRoot.getModificationType(), change.getRootPath());
+ LOG.debug("{}: Candidate node changed: {}, {}", logId, type, change.getRootPath());
NodeIdentifierWithPredicates candidateKey =
(NodeIdentifierWithPredicates) change.getRootPath().getLastPathArgument();
YangInstanceIdentifier entityId = extractEntityPath(change.getRootPath());
- if(changeRoot.getModificationType() == ModificationType.WRITE) {
- LOG.debug("Candidate {} was added for entity {}", candidate, entityId);
+ if (type == ModificationType.WRITE || type == ModificationType.APPEARED) {
+ LOG.debug("{}: Candidate {} was added for entity {}", logId, candidate, entityId);
- Collection<String> currentCandidates = addToCurrentCandidates(entityId, candidate);
- shard.tell(new CandidateAdded(entityId, candidate, new ArrayList<>(currentCandidates)), shard);
- } else if(changeRoot.getModificationType() == ModificationType.DELETE) {
- LOG.debug("Candidate {} was removed for entity {}", candidate, entityId);
+ Collection<String> newCandidates = addToCurrentCandidates(entityId, candidate);
+ shard.tell(new CandidateAdded(entityId, candidate, new ArrayList<>(newCandidates)), shard);
+ } else if (type == ModificationType.DELETE || type == ModificationType.DISAPPEARED) {
+ LOG.debug("{}: Candidate {} was removed for entity {}", logId, candidate, entityId);
- Collection<String> currentCandidates = removeFromCurrentCandidates(entityId, candidate);
- shard.tell(new CandidateRemoved(entityId, candidate, new ArrayList<>(currentCandidates)), shard);
+ Collection<String> newCandidates = removeFromCurrentCandidates(entityId, candidate);
+ shard.tell(new CandidateRemoved(entityId, candidate, new ArrayList<>(newCandidates)), shard);
}
}
}
private Collection<String> addToCurrentCandidates(YangInstanceIdentifier entityId, String newCandidate) {
Collection<String> candidates = currentCandidates.get(entityId);
- if(candidates == null) {
+ if (candidates == null) {
candidates = new LinkedHashSet<>();
currentCandidates.put(entityId, candidates);
}
private Collection<String> removeFromCurrentCandidates(YangInstanceIdentifier entityId, String candidateToRemove) {
Collection<String> candidates = currentCandidates.get(entityId);
- if(candidates != null) {
+ if (candidates != null) {
candidates.remove(candidateToRemove);
return candidates;
}
return Collections.emptyList();
}
- private YangInstanceIdentifier extractEntityPath(YangInstanceIdentifier candidatePath) {
+ private static YangInstanceIdentifier extractEntityPath(YangInstanceIdentifier candidatePath) {
List<PathArgument> newPathArgs = new ArrayList<>();
- for(PathArgument pathArg: candidatePath.getPathArguments()) {
+ for (PathArgument pathArg: candidatePath.getPathArguments()) {
newPathArgs.add(pathArg);
- if(pathArg instanceof NodeIdentifierWithPredicates) {
+ if (pathArg instanceof NodeIdentifierWithPredicates) {
NodeIdentifierWithPredicates nodeKey = (NodeIdentifierWithPredicates) pathArg;
Entry<QName, Object> key = nodeKey.getKeyValues().entrySet().iterator().next();
- if(ENTITY_ID_QNAME.equals(key.getKey())) {
+ if (ENTITY_ID_QNAME.equals(key.getKey())) {
break;
}
}
return YangInstanceIdentifier.create(newPathArgs);
}
-}
\ No newline at end of file
+}